1/*
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#include "config.h"
21
22#if ENABLE(SVG_FONTS)
23#include "SVGVKernElement.h"
24
25#include "SVGFontElement.h"
26#include "SVGFontFaceElement.h"
27#include "SVGNames.h"
28
29namespace WebCore {
30
31inline SVGVKernElement::SVGVKernElement(const QualifiedName& tagName, Document* document)
32    : SVGElement(tagName, document)
33{
34    ASSERT(hasTagName(SVGNames::vkernTag));
35}
36
37PassRefPtr<SVGVKernElement> SVGVKernElement::create(const QualifiedName& tagName, Document* document)
38{
39    return adoptRef(new SVGVKernElement(tagName, document));
40}
41
42Node::InsertionNotificationRequest SVGVKernElement::insertedInto(ContainerNode* rootParent)
43{
44    if (rootParent->inDocument()) {
45        ContainerNode* fontNode = parentNode();
46        if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
47            if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
48                element->invalidateGlyphCache();
49        }
50    }
51
52    return SVGElement::insertedInto(rootParent);
53}
54
55void SVGVKernElement::removedFrom(ContainerNode* rootParent)
56{
57    ContainerNode* fontNode = parentNode();
58    if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
59        if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
60            element->invalidateGlyphCache();
61    }
62    SVGElement::removedFrom(rootParent);
63}
64
65void SVGVKernElement::buildVerticalKerningPair(KerningPairVector& kerningPairs)
66{
67    String u1 = fastGetAttribute(SVGNames::u1Attr);
68    String g1 = fastGetAttribute(SVGNames::g1Attr);
69    String u2 = fastGetAttribute(SVGNames::u2Attr);
70    String g2 = fastGetAttribute(SVGNames::g2Attr);
71    if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))
72        return;
73
74    SVGKerningPair kerningPair;
75    if (parseGlyphName(g1, kerningPair.glyphName1)
76        && parseGlyphName(g2, kerningPair.glyphName2)
77        && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)
78        && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {
79        kerningPair.kerning = fastGetAttribute(SVGNames::kAttr).string().toFloat();
80        kerningPairs.append(kerningPair);
81    }
82}
83
84}
85
86#endif // ENABLE(SVG_FONTS)
87